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针对中低速磁浮试验线上轨道台阶引发列车激烈振动的现象,提出一种有效抑制轨道台阶干扰的新思路。建立磁浮列车单电磁铁两点悬浮模块通过轨道台阶时的动力学模型,对列车经过轨道台阶时传感器间隙和等效间隙的波动情况进行分析,运用状态反馈控制算法,分别将传感器测得间隙和计算得到的等效间隙用于反馈控制,并进行动态特性仿真对比。结果表明,这两种控制策略能反应出传感器和等效间隙的变化情况,采用等效间隙反馈较好地抑制轨道台阶干扰带来的影响。
Aimed at the phenomenon of intense vibration caused by on-orbit-track in medium-low-speed maglev test, a new idea to restrain the interference of orbit step effectively is proposed. The dynamic model of the two-point levitation module with single electromagnet of maglev train passing through the track step is used to analyze the fluctuation of sensor clearance and equivalent clearance when the train passes the track step. By using the state feedback control algorithm, The calculated equivalent gap is used for feedback control, and the simulation of dynamic characteristics is performed. The results show that these two control strategies can reflect the change of sensor and equivalent gap, and the equivalent gap feedback can restrain the influence of orbital step interference.